I checked the engine on the stand, it is dead level, and the oil was moving pretty slowly along the head before I put the covers on.
I don't have a way to check the pressure on the drill, the gauge is installed in the truck and the copper tube won't run that far! Any cheap and quick suggestions?
We didn't check the gasket fit to the bottom of the heads, just to the block, and that was good. I can't compare the BBM heads to anything else, but the drain back holes are in the outside corners of the heads. I assume if there was a problem with the design it would have been mentioned here as some members are already running them, and mine came through Barry's capable hands.
I think you are right that hot oil will drain quickly, I was mostly worried about how much oil was running into the heads.
I'll ask again, is there a difference in the movement of oil with the engine turning over vs just spinning the pump? Wondered if more of it would pass through the cam to the crank when running. Obviously I can't see what is going on.
I will put additional oil in it when running, I only put in 5 liters, and then didn't notice the drain valve was open so spilled half a liter on the floor. I was doing this to make sure I was getting ENOUGH oil to the top end, now I'm worried I'm getting too much.
Since I'm running without baffles under the rocker covers I can check the oil in the top when it is hot, but at that point it will be completely buttoned up in the truck.